In his first television interview since the Las Vegas mass shooting, Mandalay Bay security guard Jesus Campos appeared on The Ellen DeGeneres Show, along with building engineer Stephen Schuck. Campos gave his account of being the first person on site during the shooting that left 58 dead and hundreds injured.

Campos was sent to inspect a fire door that had been propped shut by the gunman. He originally thought the sound of the gunshots from the automatic weapons was drilling. Campos then calmly recounted the moment he was shot by the gunman: “As I was walking down, I heard rapid fire, and at first, I took cover. I felt a burning sensation; I went to go lift my pant leg up, and I saw the blood. That’s when I called it in on the radio that shots have been fired.”

Schuck walked down the hall moments later. Campos yelled to Schuck, “Take cover! Take cover!” Schuck then described bullets immediately flying by his head.

Thanks to Campos, Schuck was unharmed. Campos also alerted another guest to take cover in her room.

Campos and Schuck both took the time to thank the first responders, medical staff, the Las Vegas community, and people at the concert for helping during the worst mass shooting in modern U.S. history.

Ellen DeGeneres said that she wanted to give the two men money for their bravery, but the two humbly declined.